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/*
 * Copyright 2010-2016 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.ir.expressions.impl

import org.jetbrains.kotlin.descriptors.VariableDescriptor
import org.jetbrains.kotlin.ir.IrElementBase
import org.jetbrains.kotlin.ir.declarations.IrVariable
import org.jetbrains.kotlin.ir.expressions.IrCatch
import org.jetbrains.kotlin.ir.expressions.IrExpression
import org.jetbrains.kotlin.ir.expressions.IrTry
import org.jetbrains.kotlin.ir.types.IrType
import org.jetbrains.kotlin.ir.visitors.IrElementTransformer
import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
import org.jetbrains.kotlin.utils.SmartList

class IrTryImpl(
    startOffset: Int,
    endOffset: Int,
    type: IrType
) :
    IrExpressionBase(startOffset, endOffset, type),
    IrTry {

    constructor(
        startOffset: Int,
        endOffset: Int,
        type: IrType,
        tryResult: IrExpression,
        catches: List,
        finallyExpression: IrExpression?
    ) : this(startOffset, endOffset, type) {
        this.tryResult = tryResult
        this.catches.addAll(catches)
        this.finallyExpression = finallyExpression
    }

    override lateinit var tryResult: IrExpression

    override val catches: MutableList = SmartList()

    override var finallyExpression: IrExpression? = null

    override fun  accept(visitor: IrElementVisitor, data: D): R {
        return visitor.visitTry(this, data)
    }

    override fun  acceptChildren(visitor: IrElementVisitor, data: D) {
        tryResult.accept(visitor, data)
        catches.forEach { it.accept(visitor, data) }
        finallyExpression?.accept(visitor, data)
    }

    override fun  transformChildren(transformer: IrElementTransformer, data: D) {
        tryResult = tryResult.transform(transformer, data)
        catches.forEachIndexed { i, irCatch ->
            catches[i] = irCatch.transform(transformer, data)
        }
        finallyExpression = finallyExpression?.transform(transformer, data)
    }
}

class IrCatchImpl(
    startOffset: Int,
    endOffset: Int
) :
    IrElementBase(startOffset, endOffset),
    IrCatch {

    constructor(
        startOffset: Int,
        endOffset: Int,
        catchParameter: IrVariable
    ) : this(startOffset, endOffset) {
        this.catchParameter = catchParameter
    }

    constructor(
        startOffset: Int,
        endOffset: Int,
        catchParameter: IrVariable,
        result: IrExpression
    ) : this(startOffset, endOffset, catchParameter) {
        this.result = result
    }

    override lateinit var catchParameter: IrVariable
    override lateinit var result: IrExpression

    override val parameter: VariableDescriptor get() = catchParameter.descriptor

    override fun  accept(visitor: IrElementVisitor, data: D): R {
        return visitor.visitCatch(this, data)
    }

    override fun  acceptChildren(visitor: IrElementVisitor, data: D) {
        catchParameter.accept(visitor, data)
        result.accept(visitor, data)
    }

    override fun  transformChildren(transformer: IrElementTransformer, data: D) {
        catchParameter = catchParameter.transform(transformer, data) as IrVariable
        result = result.transform(transformer, data)
    }
}